Watch-history cards rendered "Untitled video" / "Unknown" for newly watched
videos. nostrClient.allEvents stores CONVERTED video objects
(convertEventToVideo), which carry tags/pubkey but no `kind` field — only raw
relay events do. resolveEventAddress() did Number(event.kind) → NaN and bailed
with "", so the address (cache-by-"a"-pointer) scan matched nothing. Every video
pointer (all are "a" addresses) was forced to a relay round-trip, and when that
returned nothing the card showed Unknown — even though the just-watched video
was sitting right there in allEvents.
Fix: default to the video kind (30078) when a cached object has no `kind`, so the
local cache scan resolves freshly-watched "a" pointers without a relay round-trip.
Adds tests/watch-history-hydration-cache.test.mjs: relays return nothing, so a
pass can only come from the cache scan (mutation-verified against the NaN-reject
regression). Exports createWatchHistoryHydrationStage for boundary testing.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
